1 Corinthians 5:3-7

³For I most assuredly, as being absent in body but present in spirit, have already, as though I were present, judged him who has done this thing. ⁴In the name of our Lord Jesus Christ, you being gathered together, and my spirit, with the power of our Lord Jesus Christ, ⁵are to deliver such a one to Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. ⁶Your boasting is not good. Don`t you know that a little yeast leavens the whole lump? ⁷Purge out the old yeast, that you may be a new lump, even as you are unleavened. For indeed Christ, our Passover, has been sacrificed in our place.